DS1339 Просмотр технического описания (PDF) - Dallas Semiconductor -> Maxim Integrated
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DS1339 Datasheet PDF : 19 Pages
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DS1339 I2C Serial Real-Time Clock
ADDRESS MAP
Table 3 shows the address map for the DS1339 registers. During a multibyte access, when the address pointer
reaches the end of the register space (10h), it wraps around to location 00h. On an I2C START, STOP, or address
pointer incrementing to location 00h, the current time is transferred to a second set of registers. The time
information is read from these secondary registers, while the clock may continue to run. This eliminates the need
to re-read the registers in case of an update of the main registers during a read.
Table 3. Timekeeper Registers
ADDRESS
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0 FUNCTION
RANGE
00H
0
10 Seconds
Seconds
Seconds
00–59
01H
02H
03H
04H
05H
06H
07H
08H
09H
0AH
0BH
0CH
0DH
0EH
0FH
10H
0
0
0
0
Century
A1M1
A1M2
A1M3
10 Minutes
12/24
AM/PM
10 Hour
10 Hour
0
0
0
0
10 Date
0
0
10
Month
10 Year
10 Seconds
12/24
10 Minutes
AM/PM
10 Hour
10 Hour
A1M4 DY/DT
10 Date
A2M2
A2M3
12/24
10 Minutes
AM/PM
10 Hour
10 Hour
A2M4 DY/DT
10 Date
EOSC
OSF
TCS3
0
0
TCS2
BBSQI
0
TCS1
RS2
0
TCS0
0
RS1
0
DS1
Minutes
Minutes
Hour
Hours
Day
Date
Month
Year
Seconds
Minutes
Hour
Day, Date
Minutes
Hour
Day, Date
INTCN
0
DS0
A2IE
A2F
ROUT1
A1IE
A1F
ROUT0
Day
Date
Month/
Century
Year
Alarm 1
Seconds
Alarm 1
Minutes
Alarm 1
Hours
Alarm 1
Day,
Alarm 1
Date
Alarm 2
Minutes
Alarm 2
Hours
Alarm 2
Day,
Alarm 2
Date
Control
Status
Trickle
Charger
00–59
1–12
+AM/PM
00–23
1–7
01–31
01–12 +
Century
00–99
00–59
00–59
1–12 +
AM/PM
00–23
1-7, 1-31
00–59
1–12 +
AM/PM
00–23
1–7, 1–31
Note: Unless otherwise specified, the state of the registers are not defined when power is first applied or when VCC and VBACKUP falls below the
VBACKUP(MIN).
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